package com.zaodei.rxjob.core.config;

import java.util.LinkedHashMap;
import java.util.Map;

import javax.servlet.Filter;

import org.apache.shiro.cache.CacheManager;
import org.apache.shiro.cache.ehcache.EhCacheManager;
import org.apache.shiro.codec.Base64;
import org.apache.shiro.mgt.SecurityManager;
import org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.CookieRememberMeManager;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.apache.shiro.web.servlet.SimpleCookie;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import com.zaodei.rxjob.common.utils.StringUtils;
import com.zaodei.rxjob.core.shiro.cache.RedisCacheManager;
import com.zaodei.rxjob.core.shiro.realm.UserRealm;
import com.zaodei.rxjob.core.shiro.session.OnlineSessionDAO;
import com.zaodei.rxjob.core.shiro.session.OnlineSessionFactory;
import com.zaodei.rxjob.core.shiro.session.RedisSessionDAO;
import com.zaodei.rxjob.core.shiro.web.filter.LogoutFilter;
import com.zaodei.rxjob.core.shiro.web.filter.captcha.CaptchaValidateFilter;
import com.zaodei.rxjob.core.shiro.web.filter.online.OnlineSessionFilter;
import com.zaodei.rxjob.core.shiro.web.filter.sync.SyncOnlineSessionFilter;
import com.zaodei.rxjob.core.shiro.web.session.OnlineWebSessionManager;
import com.zaodei.rxjob.core.shiro.web.session.SpringSessionValidationScheduler;

import at.pollux.thymeleaf.shiro.dialect.ShiroDialect;

/**
 * 权限配置加载
 * 
 * @author wuche@laozo.com
 */
@Configuration
public class ShiroConfig
{
    public static final String PREMISSION_STRING = "perms[\"{0}\"]";

    // Session超时时间，单位为毫秒（默认30分钟）
    @Value("${shiro.session.expireTime}")
    private int expireTime;

    // 相隔多久检查一次session的有效性，单位毫秒，默认就是10分钟
    @Value("${shiro.session.validationInterval}")
    private int validationInterval;

    // 验证码开关
    @Value("${shiro.user.captchaEnabled}")
    private boolean captchaEnabled;

    // 验证码类型
    @Value("${shiro.user.captchaType}")
    private String captchaType;

    // 设置Cookie的域名
    @Value("${shiro.cookie.domain}")
    private String domain;

    // 设置cookie的有效访问路径
    @Value("${shiro.cookie.path}")
    private String path;

    // 设置HttpOnly属性
    @Value("${shiro.cookie.httpOnly}")
    private boolean httpOnly;

    // 设置Cookie的过期时间，秒为单位
    @Value("${shiro.cookie.maxAge}")
    private int maxAge;

    // 登录地址
    @Value("${shiro.user.loginUrl}")
    private String loginUrl;

    // 权限认证失败地址
    @Value("${shiro.user.unauthorizedUrl}")
    private String unauthorizedUrl;
    
    // redis缓存开关
    @Value("${spring.redis.enabled}")
    private boolean redisEnabled = false;

    /**
     * 缓存管理器 使用Ehcache实现
     */
//    @Bean
    public EhCacheManager getEhCacheManager()
    {
        net.sf.ehcache.CacheManager cacheManager = net.sf.ehcache.CacheManager.getCacheManager("dlbe");
        EhCacheManager em = new EhCacheManager();
        if (StringUtils.isNull(cacheManager))
        {
            em.setCacheManagerConfigFile("classpath:ehcache/ehcache-shiro.xml");
            return em;
        }
        else
        {
            em.setCacheManager(cacheManager);
            return em;
        }
    }
    
    /**
     * 缓存管理器 使用redis实现
     *
     * @return
     */
//    @Bean
//    @ConditionalOnMissingBean(name = "redisTemplate")
    public RedisCacheManager getRedisCacheManager()
    {
        RedisCacheManager redisCacheManager = new RedisCacheManager();
        return redisCacheManager;
    }

    /**
     * 自定义Realm
     */
    @Bean
    public UserRealm userRealm(CacheManager cacheManager)
    {
        UserRealm userRealm = new UserRealm();
        userRealm.setCacheManager(cacheManager);
        return userRealm;
    }

    /**
     * 自定义sessionDAO会话
     */
    @Bean
    public OnlineSessionDAO sessionDAO()
    {
        OnlineSessionDAO sessionDAO = new OnlineSessionDAO();
        return sessionDAO;
    }
    
    /**
     * 自定义RedisSessionDAO会话
     */
    @Bean
//    @ConditionalOnMissingBean(name = "redisTemplate")
    public RedisSessionDAO redisSessionDAO()
    {
        RedisSessionDAO redisSessionDAO = new RedisSessionDAO();
        redisSessionDAO.setExpireTime(expireTime * 60);
        return redisSessionDAO;
    }

    /**
     * 自定义sessionFactory会话
     */
    @Bean
    public OnlineSessionFactory sessionFactory()
    {
        OnlineSessionFactory sessionFactory = new OnlineSessionFactory();
        return sessionFactory;
    }

    /**
     * 自定义sessionFactory调度器
     */
    @Bean
    public SpringSessionValidationScheduler sessionValidationScheduler()
    {
        SpringSessionValidationScheduler sessionValidationScheduler = new SpringSessionValidationScheduler();
        // 相隔多久检查一次session的有效性，单位毫秒，默认就是10分钟
        sessionValidationScheduler.setSessionValidationInterval(validationInterval * 60 * 1000);
        // 设置会话验证调度器进行会话验证时的会话管理器
        sessionValidationScheduler.setSessionManager(sessionValidationManager());
        return sessionValidationScheduler;
    }

    /**
     * 会话管理器
     */
    @Bean
    public OnlineWebSessionManager sessionValidationManager()
    {
        OnlineWebSessionManager manager = new OnlineWebSessionManager();
        // 加入缓存管理器
        manager.setCacheManager(redisEnabled ? getRedisCacheManager() : getEhCacheManager());
        // 删除过期的session
        manager.setDeleteInvalidSessions(true);
        // 设置全局session超时时间
        manager.setGlobalSessionTimeout(expireTime * 60 * 1000);
        // 去掉 JSESSIONID
        manager.setSessionIdUrlRewritingEnabled(false);
        // 是否定时检查session
        manager.setSessionValidationSchedulerEnabled(true);
        // 自定义SessionDao
        manager.setSessionDAO(redisEnabled ? redisSessionDAO() : sessionDAO());
        // 自定义sessionFactory
        manager.setSessionFactory(sessionFactory());
        return manager;
    }

    /**
     * 会话管理器
     */
    @Bean
    public OnlineWebSessionManager sessionManager()
    {
        OnlineWebSessionManager manager = new OnlineWebSessionManager();
        // 加入缓存管理器
        manager.setCacheManager(redisEnabled ? getRedisCacheManager() : getEhCacheManager());
        // 删除过期的session
        manager.setDeleteInvalidSessions(true);
        // 设置全局session超时时间
        manager.setGlobalSessionTimeout(expireTime * 60 * 1000);
        // 去掉 JSESSIONID
        manager.setSessionIdUrlRewritingEnabled(false);
        // 定义要使用的无效的Session定时调度器
        manager.setSessionValidationScheduler(sessionValidationScheduler());
        // 是否定时检查session
        manager.setSessionValidationSchedulerEnabled(true);
        // 自定义SessionDao
        manager.setSessionDAO(redisEnabled ? redisSessionDAO() : sessionDAO());
        // 自定义sessionFactory
        manager.setSessionFactory(sessionFactory());
        return manager;
    }

    /**
     * 安全管理器
     */
    @Bean
    public SecurityManager securityManager(UserRealm userRealm)
    {
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        // 设置realm.
        securityManager.setRealm(userRealm);
        // 记住我
        securityManager.setRememberMeManager(rememberMeManager());
        // 注入缓存管理器;
        securityManager.setCacheManager(redisEnabled ? getRedisCacheManager() : getEhCacheManager());
        // session管理器
        securityManager.setSessionManager(sessionManager());
        return securityManager;
    }

    /**
     * 退出过滤器
     */
    public LogoutFilter logoutFilter()
    {
        LogoutFilter logoutFilter = new LogoutFilter();
        logoutFilter.setLoginUrl(loginUrl);
        return logoutFilter;
    }

    /**
     * Shiro过滤器配置
     */
    @Bean
    public ShiroFilterFactoryBean shiroFilterFactoryBean(SecurityManager securityManager)
    {
    	 ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
         // Shiro的核心安全接口,这个属性是必须的
         shiroFilterFactoryBean.setSecurityManager(securityManager);
         // 身份认证失败，则跳转到登录页面的配置
         shiroFilterFactoryBean.setLoginUrl(loginUrl);
         // 权限认证失败，则跳转到指定页面
         shiroFilterFactoryBean.setUnauthorizedUrl(unauthorizedUrl);
         // Shiro连接约束配置，即过滤链的定义
         LinkedHashMap<String, String> filterChainDefinitionMap = new LinkedHashMap<>();
         // 对静态资源设置匿名访问
         filterChainDefinitionMap.put("/favicon.ico**", "anon");
         filterChainDefinitionMap.put("/dlbe.png**", "anon");
         filterChainDefinitionMap.put("/css/**", "anon");
         filterChainDefinitionMap.put("/docs/**", "anon");
         filterChainDefinitionMap.put("/fonts/**", "anon");
         filterChainDefinitionMap.put("/img/**", "anon");
         filterChainDefinitionMap.put("/ajax/**", "anon");
         filterChainDefinitionMap.put("/js/**", "anon");
         filterChainDefinitionMap.put("/dlbe/**", "anon");
         filterChainDefinitionMap.put("/cdeledu/**", "anon");
         filterChainDefinitionMap.put("/druid/**", "anon");
         filterChainDefinitionMap.put("/captcha/captchaImage**", "anon");
         // 退出 logout地址，shiro去清除session
         filterChainDefinitionMap.put("/logout", "logout");
         // 不需要拦截的访问
         filterChainDefinitionMap.put("/login", "anon,captchaValidate");
         
         filterChainDefinitionMap.put("/demo", "anon,captchaValidate");
         //api接口不需要拦截
         filterChainDefinitionMap.put("/api", "anon");
         // 系统权限列表
         // filterChainDefinitionMap.putAll(SpringUtils.getBean(IMenuService.class).selectPermsAll());
		//运维监控页面不需要拦截
		filterChainDefinitionMap.put("/MonitorDB/**", "anon,captchaValidate");
	  
         Map<String, Filter> filters = new LinkedHashMap<>();
         filters.put("onlineSession", onlineSessionFilter());
         filters.put("syncOnlineSession", syncOnlineSessionFilter());
         filters.put("captchaValidate", captchaValidateFilter());
         // 注销成功，则跳转到指定页面
         filters.put("logout", logoutFilter());
         shiroFilterFactoryBean.setFilters(filters);

         // 所有请求需要认证
         filterChainDefinitionMap.put("/**", "user,onlineSession,syncOnlineSession");
         shiroFilterFactoryBean.setFilterChainDefinitionMap(filterChainDefinitionMap);

         return shiroFilterFactoryBean;
    }

    /**
     * 自定义在线用户处理过滤器
     */
    @Bean
    public OnlineSessionFilter onlineSessionFilter()
    {
        OnlineSessionFilter onlineSessionFilter = new OnlineSessionFilter();
        onlineSessionFilter.setLoginUrl(loginUrl);
        return onlineSessionFilter;
    }

    /**
     * 自定义在线用户同步过滤器
     */
    @Bean
    public SyncOnlineSessionFilter syncOnlineSessionFilter()
    {
        SyncOnlineSessionFilter syncOnlineSessionFilter = new SyncOnlineSessionFilter();
        return syncOnlineSessionFilter;
    }

    /**
     * 自定义验证码过滤器
     */
    @Bean
    public CaptchaValidateFilter captchaValidateFilter()
    {
        CaptchaValidateFilter captchaValidateFilter = new CaptchaValidateFilter();
        captchaValidateFilter.setCaptchaEnabled(captchaEnabled);
        captchaValidateFilter.setCaptchaType(captchaType);
        return captchaValidateFilter;
    }

    /**
     * cookie 属性设置
     */
    public SimpleCookie rememberMeCookie()
    {
        SimpleCookie cookie = new SimpleCookie("rememberMe");
        cookie.setDomain(domain);
        cookie.setPath(path);
        cookie.setHttpOnly(httpOnly);
        cookie.setMaxAge(maxAge * 24 * 60 * 60);
        return cookie;
    }

    /**
     * 记住我
     */
    public CookieRememberMeManager rememberMeManager()
    {
        CookieRememberMeManager cookieRememberMeManager = new CookieRememberMeManager();
        cookieRememberMeManager.setCookie(rememberMeCookie());
        cookieRememberMeManager.setCipherKey(Base64.decode("fCq+/xW488hMTCD+cmJ3aQ=="));
        return cookieRememberMeManager;
    }

    /**
     * thymeleaf模板引擎和shiro框架的整合
     */
    @Bean
    public ShiroDialect shiroDialect()
    {
        return new ShiroDialect();
    }

    /**
     * 开启Shiro注解通知器
     */
    @Bean
    public AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor(
            @Qualifier("securityManager") SecurityManager securityManager)
    {
        AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor = new AuthorizationAttributeSourceAdvisor();
        authorizationAttributeSourceAdvisor.setSecurityManager(securityManager);
        return authorizationAttributeSourceAdvisor;
    }
}
